Automatic governor for the brakes of motor and railway wheels and other rotary devices



March 31. 1925. 1,531,926

. P. A AUTOMATIC GOVERNOR FOR THE BRAKES OF uo'ron AND RAILWAY WHEELSAND 0mm ROTARY nav css Filed April 6, 1921 Patented Mar. 31, 1925.

UNITED STATES 1,531,926 PATENT OFFICE.

PAUL HALLOT, F PAR-IS, FRANCE.

AUTOMATIC GOVERNOR FOR THE BRAKES 0F MOTOR AND RAILWAY WHEELS AND OTHERROTARY DEVICES.

Application filed April '6, 1921. Serial No, 459,140.

To all 1071072; it may concern:

Be it known that I, PAUL HALLO'r, a citi- Zen of the French Republic,and residing in Paris, France, Rue du Plelo, have invented certain newand useful Improvements in and Relatin to Automatic Governors for theBrakes of Motor and Railway Wheels and Other Rotary Devices (for which Ihave filed an application in France December 6, 1913, No. 474,518), ofwhich the following is a complete specification.

The object of my present invention is to provide new or improvedautomatic centrifugal governors or regulators, intended to control thespeed of any rotary device within determinate limits. Applied to thebrakes of vehicles or railway-cars, said governors permit to give thebraking action its maximum intensity at high speed, preventing thedangerous effects of wedging the wheels at reduced speed.

The invention is illustrated in the accompanying drawings, wherein:

Figure 1 shows a side elevation partly in section of my improved device,

Figure 2 is a cross section of the'pulley forming part of thedevice,'taken on line 2-2 of Figure 1.

Figure 3 is a side elevation of my apparatus applied to a railway-car,

Figure 4: is a cross section through the loose pulleys thereof taken online 44 of Figure 3. 7

Referring to Figures 1 and 2, a represents the operating rod of thedevice to be governed or braked (slide-valve of a steamengine, brakesteerage of a vehicle or railway-car and the like), said rod (.1, beingmoved through the agency of a lever e by a cable 7/, operated by theoperating member a (lever, treadle, cylinder piston, diaphragm and thelike). The cable I) passed n times around a loose pulley 7, arrangedaround masses 70, carried around by radial. partitions 5, bolts or thelike, made integral with the rotary member it to be controlled. Themasses 7;" are pressed by centrifugal force against the loose pulley f,frictionally engaging the same or causing it to be rotated with them.

)Vhen the rotary member h is revolving rapidly, any strain produced uponthe end 0 of the cable I) will be multiplied according to the number ofturns of the cable on the pulley which, when rotating solid with theshaft it through the action of the centrifugal masses 70 at high speed,acts as a brake multiplying drum and therefore transmits an increasedforce to the rod a.

As soon however, as the decrease ofspeed produced by said straindisconnects the pulley f from the shaft 71, said pulley becomes againloose and at a reduced speed it merely acts as a guide-pulley. The forceproduced by the end (Z of the cable will therefore be automaticallydecreased to an extent below I the force produced directly upon the end0 of the operating cable, to which however is added an additional force,due to the frictional engagement of the centrifugal masses against theinner surface of the loose pulley.

Attached on the lever e is the end of a coiled spring 7) the other endof which is fixed to the end of a screw-threaded rod q-- provided with anut 'r-which isfree to rohand side of the figure 1, and such lever 6 maybe stopped by a movable pin it which may be placed in any one of theseries of holes 4) thus limiting the course of the said lever e.

In the application of this governor to railway-cars (Figures 3 and 4:),the lever a is actuated by the piston of a pressure fluid cylinder 209,connected to a fluid distributor 211, branched on the main pipe 210. Theapparatus keyed on one of the car axles 72, comprises (Figure 4) adriving sleeve composed of one or two loose pulleys 201, 202 with masses7: separated from one an other by a fixed pulley 203 integralwith thesleeve 9. An endless cable 7) is engaged in the groove of'an operatingpulley 206, sus pended from. the carfra1ne by the lover a actuated whenthe brakes are to be applied by the piston-rod 208 of the brake-cylinder209.

The lever e of the brake steerage is actuated by means of two lugs 212and 213 carried by the endless cable and either of which, according tothe direction of movement, presses against the said lever. The latter issuitably arranged to permit of the frfiii sliding of the leads 6 and bof the ca e.

I wishit to be' understood that the =de-- vices above described aregiven-=inerely by way of example. The shape of said devices may bemodified as desired and the devices may be combined in' any desired waywithout-departing from the scope of the invention.

What I laim is:

1. In a braking apparatus for vehiclesya casing solid with a moving partor axle of a vehicle, centrifugalr masses in said casing, driving partscontrolling the rotation of the said-masses, a pulley'arran'ged intheperiphery of said-casing and acablepassing upon- 'the said pulley andconnected on the one hand toacontrolling lever and'on'theother hand to abrake of the'vehicler" 2. In a braking apparatus for vehicles the.combination with a movable =-part of a vehi ole of a" casing carried bysaid part, parti tions-provided in the casingmasses'arrangedin thecells'determined by'the said iparti tions,=a loosely mounted pulley onthe casing and with which the said masses are intended- 'to engageunder' a centrifugalaction, a cable passing' around'the pulley, an=operating" lever connected Withthecabie for rendering the samesolid-with the said pulley-When braking action is -desirecl*,-andmeansfor operating thebrake from the cable.

3. In a braking apparatus for. vehiclesthe combinationwith aniaxleofthesaid: vehicle of the casing carried by -the-saidon the casing andwith which the masses are I intendedto engage. under a centrifugalaction, a'cable passinground the pulley, an

operating lever connected with the cable for-:-

rendering-the same solid with the said pulley-when a braking action-isdesired, and means. for operating the brake from the cable. 7

4. In a braking apparatus for vehicles, the combination with an axle, ofa casing carried by the axle, masses in the casing, a loosely mountedpulley in the casing and with whichthe-masses are adapted to en gage, acable Wound upon the pulley, an

operating lever with which one end: of 'the 'cabl'e isxconnected, apivoted lever-with which the other end of the'cable is connectedyand arod pivoted to'said lever and to which a brake rod is connected.

5. In a braking 'apparatus for"vehi'cles,-

vehicle, of a casing 'carried'by said'-part,'"

masses-in the. casing, a loosely mounted pul-- ley -in the 'casing'andwith which thenmasses are adaptecl'to engage,xa.cable wound upon thepulley, a leveroperated by the cable and ito which'a controlling memberof the vehiclewi s connected, and-meansfor exerting ten- SIOII'OII thecableu 6. In a braking apparatus 'for vehicles,

the combination with an axle, of a member secured' to the axleand.havingfi-sides 'andl radial wings, a pulley "l'ooselyniounted between''the sides of said member, masses between the wings .of the: member andadapted: to engage the pulley, a cable wound upon the pulley, means foroperatingacon trolling member of the vehicle: fIOIlli-illl cable, andmeans-for exerting tension wonsaid= cable.

In testimony I have heireuntoset my hand.

PAUL HALLOT.

